• Circulus

    Origin

    Borrowed from .

    Full definition of circulus

    Noun

    circulus

    (plural circuli)
    1. (zoology)
      1. (herpetology) A social group of reptiles where there is interaction and personal exchange between individuals.
      2. (ichthyology) A concentric growth ring found on the scales of fish. This ring develops around the focus of the fish's scale as the fish grows.
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